Show the URL for the Mixer self-monitoring endpoint (#4639)
Show the URL for the Mixer self-monitoring endpoint (#4639)

* Show the URL for the Mixer self-monitoring endpoint

So that the user does not have to guess.

* Update content/docs/ops/telemetry/missing-metrics/index.md

Co-Authored-By: Frank Budinsky <eff2b2321921dd21161b5817c477702c05bb637b@ca.ibm.com>

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